Lubricating-pulley.



H. L. OVIATT & W. ENGLAND.

LUBRIGATING PULLEY.

APPLICATION FILED JAN-26,1915.

Patented Apr. 18, 1916.

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' H. L.-OVIATT 64 W. ENGLAND.

LUBRICATING PULLEY.

APPLICATION. FILED IAN-26,1915.

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HARRY I1. OVIATT AND WILLIAM ENGLAND, OF SHERIDAN, OREGON.

LUBRICATING-PULLEY.

Application filed January 26, 1915.

To all whom it may concern:

Be it known that we, HARRY L. OVIAT'I and WILLIAM ENGLAND, citizens of the United States of America, residing at Sheridan, in the county of Yamhill and State of Oregon, have invented certain new and useful Improvements in Lubricating-Pulleys, of which the following is a specification.

The present invention relates to improvements in lubricating pulleys, and is designed to provide a pulley or block that is facile and efiicient in operation, and that is automatically oiled or lubricated at all times when in use.

The invention consists essentially in certain combinations and arrangements of parts whereby the journal of the pulley or block is lubricated due to the cooperation of parts on the rotating pulley or wheel with a device located in the Wheel frame or shell, as will be hereinafter more specifically set forth.

In the accompanying drawings We have illustrated one complete example ofthe physical embodiment of our invention constructed according to the best mode we have so far devised for the practical application of the principles of our invention.

Figure 1 is a side elevation of a pulley block constructed according to our invention. Fig. 2 is an edge view of Fig. 1. Fig. 3 is a horizontal sectional view of a portion of the device showing the lubricating ducts in the journal of the wheel and the valve or gate, with its operating device, for admitting lubricant to the duct. Fig. 4: shows one side of the pulley with the three abutting elements, and also shows portions of the shell and hooks in section. Fig. 5 is a transverse vertical sectional view of the pulley block.

In the preferred embodiment of our invention the pulley wheel 1 is supported upon the journal or shaft 2, formed with the squared ends 3 and 4 which are fixed in the bosses 5 and 6 of the side plates 7' and 8 which form the shell or frame for the wheel. In this manner the wheel is adapted to revolve or rotate upon the rounded central portion of the shaft which has its squared ends fixed in the frame of the wheel.

The frame, or side plates 7 and 8, are each provided with lower extensions or arms 9 and 10, the latter with a bent end 11, and these two parts are hinged or pivoted to gether by the bolt 12 so that the side plates Specification of Letters Patent.

Patented Apr. is, mic.

Serial No. 4,5 18.

face 13 of lug 13 is at the outside of this circumferential line, while the curved faces 14: and 15 are at the inside of this line. These lugs are the actuators for the lubricating device, the lug 13 operating to open the lubricating device, and the lug 14: operating to close the device when the wheel is rotating clockwise, and the lug 15 operating to close the device when the wheel is rotating anti-clockwise. These lugs 18, 1 1, 15, are designed to co-act with a lever 16, best illustrated in Fig. 3 where it is shown in contact with the lug 13 on the wheel 1. The lever 16 which is pivoted in the frame plate 8 at 17, is pivotally and slidably connected at 18 to a slide plate 19 which is adapted to move horizontally in a slot or groove in the inner face of the plate 8. This slide plate is formed with a perforation 20 that is adapted to register with the open end of an axial duct 21 in the shaft 2, and this axial duct connects with the diametrical or radially extending duct or opening 22 which extends transversely through the rounded part of the shaft which acts as a journal for the pulley wheel 2. At one side this slide plate closes the open end of an oil cup 23 which is threaded into the boss 6 of the plate 8, and at the other side it closes the duct 21. and of course it will be understood that when the perforation 20 registers with the duct 21, the lubricating oil is free to flow into the ducts 21 and 22 from the oil cup, and thus oil the bearing of the wheel upon its shaft.

In Fig. 3 the lug 13 is holding the perforated slide plate in open position so that the oil may flow to the bearing. Now if the wheel. is rotating to the right or clockwise in Fig. 4, it will be apparent that after the lug 13 leaves the lever 16 the rounded face 15 of the lug 15 will strike the lever 16 and throw the lever outwardly, moving it on its pivot, and this movement will push in the slide plate and disconnect the communication between the duct 21 perforation 20 and the oil cup. This movement closes the oil cup. The same closing movement is effected when the wheel is rotating anti-clockwise or to the left in Fig. 4, by contact with the lug 14 of the lever 16. From this description it will be understood that the oil is free to flow only during the interval of time it is required for the wheel to rotate the distance between lug 13 and 15 or lug l3 and 14, and the consequence is that the lubricating oil flows only a drop at a time and the supply is thus conserved and waste eliminated or avoided.

'The'two side plates of the frame are held 1 together by a latch 23 which is pivoted at 2a in a pair of perforated ears 25, 25 in the side plate 7 This latch extends across between the frame plates above the wheel, and its tongue 26 projects between a pair of perforated ears 26 26' of the plate 8, and engages over the upper edge of the plate 8 as best seen in Fig. 5. The latch is locked in place by means of the loop"or ring 27 which is pivoted on the bOlt.24:, and is located within a recess in the end of the latch 23, cut out especially to permit the introduction of the end of the loop 27. The end 27 of the loop is perforated and when closed. this end is projected between the perforated ears 26 and rests upon the top of the tongue 26 of the latch. The bolt 28 which is passed through the perforated ears 26 and the perforated end 27 of the loop, thus locks these parts and also holds thelatch 23 in locked position. In this manner the two side plates of the wheel frame are securely held together and the wheel is held in position to revolve on its axle or shaft 2.

The loop or yoke 27 is of course for the attachment of the block suspending rope or chain, and the latch in addition to its usual function, also serves to prevent the line or rope from kicking back from the sheave or pulley wheel to the yoke.

It will be understood of course that the self-oiling device may be applied to different forms or sizes of pulleys or pulley blocks, and it is evident that the oil cup 23 may be arranged in desired or necessary position to insure proper flow of oil to the shaft or axle.

From the above description taken in connection with our drawings, it will be apparent that we have provided a pulley block that is extremely simple in construction and operation, which may be repaired with facility and little difficulty or trouble, and which is a reliable and thorough automatic self-oiling or lubricating device. The pulley blocks are of course made in various sizes to suit different purposes, and preferably the shells are made of malleable cast iron while the pivot bolts or pins, the latch and yoke are usually of good grade steel.

Having thus fully described our invention, what we claim is 1. The combination with a pulley wheel, its side plates and a shaft fixed in the plates, of an oil cup supported in one of the plates, a perforated slide plate between said cup and shaft, and a lever for moving the plate,

said wheel having abutments for actuating the lever.

2. The combination with a pulley wheel, its frame and its shaft fixed in the frame, of a lever and a perforated slide plate adapted to admit lubricant to said shaft, said wheel having lugs adapted to co-act with said lever for moving said slide plate for the purpose described.

In testimony whereof we affix our signatures in presence of two witnesses.

HARRY L. OVIATT. WILLIAM ENGLAND. WVitnesses:

S. L. Sonooerx, ZELLA Cox.

copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. C. 

